Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
170017excellentexcellent31excellent
160017excellentexcellent21excellent
150029goodexcellent31excellent
140034goodexcellent31excellent
130030goodexcellent31excellent
120036goodexcellent31excellent
110034goodexcellent31excellent
100042goodexcellent31excellent
090043goodexcellent31excellent
080043goodexcellent31excellent
070037goodexcellent21excellent
060032goodexcellent21excellent
050062lightly pollutedexcellent61excellent
040066lightly pollutedexcellent51excellent
030053goodexcellent51excellent
020042goodexcellent31excellent
010041goodexcellent41excellent
000039goodexcellent31excellent
230045goodexcellent41excellent
220054goodexcellent51excellent
210048goodexcellent41excellent
200041goodexcellent31excellent
190031goodexcellent31excellent
180024goodexcellent31excellent